Ball-cavity blower



M MILLER. BALL CAVITYBLOWER.

APPLICATION FILED'DEC. 7. 1920 1,399,068. Patented Dec. 1921.

MAX MILLER INVENTOR.

PAULA BREWER A TTORNEYS. wnws'ss Ernest Brewer MAX MILLER, OF NEW YORK, W. Y.

BALL-CAVITY BLOWER.

aeaoes.

Specification of Letters Patent.

Patented Dec. 6, 1921.

Application filed December 7, 1920. Serial No. 429,021.

To all whom it may concern:

Be it known that 1, MAX MILLER, a citizen of the United States, and residing at 855 Tremont avenue, city of New York, county of Bronx, and State of New York, have invented a new and useful Improvement in Ball-Cavity Blowers for Dentists Use and other Purposes, of which the following is a specification, such as will enable those skilled in the art to which it appertains to make and use the same.

This my invention is an improvement over the ball blower now used, in so far as it prevents the burning of the patients lips, gums, and other parts of the mouth.

The invention consists of an improvement in ball cavity blowers as used by dentists and others. It is composed of a rubber ball, a long tube tapering to smaller diameter at its free end, a sliding member or short covering tube closely fitting the long tube but free to move over the same in either direction, and a lever mechanism to move said sliding member in either direction.

Figure l, in the drawing, shows my im provement ready for use by the dentist, or others doing fine work. Fig. II shows the improvement, with the perforated part uncovered, ready to receive heated air. Fig.

III shows an enlargement of the lever,"

clearly setting forth the traveling space for the connecting pin. Fig. 1V shows my improvement in connection with an alcohol flame or a Bunsen burner, by means of which the air is heated.

Referring to the numerals in the figures, 1 is a rubber ball, 2 a small hand lever, 3 represents the bolts or connecting pins by means of which the mechanism is secured, 4 is a bracket secured to arm 5, 6 is the sliding member hinged to .lever 2, 7 is the tube, 8 shows the tapered end of the tube 7 and acts as a nozzle, 9 is the perforated part of the tube 7 where heat is applied, 10 shows alcohol flame or Bunsen burner which is the source of heat supply.

In operation my invention works as follows :When lever 2 is pulled back, sliding member 6 moves forward and thereby uncovers perforated part 9 of the tube 7 ball 1 is depressed by the hand and the tube 7 held over the lamp or burner 10 in uch a way that the flame will impinge upon part 9 of tube 7.

While the ball 1 is now allowed to expand slowly, by lessening the pressure of the hand on ball 1, air is drawn into the ball 1 through the tube 7 Part of the air will enter the tube 7 and the ball 1 by means of the nozzle opening 8 and some air will enter through the small holes at 9. By whatever means the air may enter, it will have to pass the heat of the flame or burner 10, and as part of this heat is given up by contact with the air, nothing but heated air will enter the ball 1.

If lever 2 is now pushed back into place upright-thereby closing part 9 of tube 7 and the ball 1 again depressed, all the heated air contained in the ball 1 will have to leave by way of nozzle opening 9. d

The free end of the tube 7 not having been exposed to flame its rise in temperature is very small and can therefore be inserted into the patients month without injury.

Having fully described my invention, what I claim as new, and desire to secure by Letters Patent is:

1.v An improved ball cavity blower hav-, ing parts which draw the air into the ball through the perforated part of the tube,

MAX MILLER.

Witnesses:

JOHN LUPTACK, PAULA BREWER. 

